AUTOTOOLHOME Self Centering Doweling Jig Dowel Jig Kit Drill Jig for Straight Holes Wood Joiner 6 Drill Guide Bushings Set Woodworking Power Tool Accessory Jigs

A great tool. The only thing that is at all challenging is if you have to line up two holes on opposite pieces of wood, the alignment lines are sometimes hard to line up. Take your time, double check and it works fine.

Great tool for driving precise holes that needed to be straight for doweling. Would recommend this tool

This one’s a life saver if you need a hole in the center and don’t have a drill press. After many failed attempts of trying to get a straight hole with a hand held drill, I caved in and bought this. I should’ve bought it weeks ago when I started struggling with the job. The clamp is heavy duty with a nice polished finish on it. The rod used to move the clamp is smooth and easy to turn. A nice small size but opens up big enough to get most projects I would need it for done. Once clamped on the project it’s very stable and won’t move unless you loosen the knob. It’s very easy to screw in and out the different (included) inserts for different size bits. Also does not mark up the wood when clamped down.

There is a fix for the centering inaccuracy I've read about in many reviews. On the opposite side from the handle are 2 small cap screws. Loosen them and turn the oddly notched retaining nut until the black block is centered by measuring. Tighten the cap screws. This is an inexpensive tool, but it'll give consistent and centered holes for each job you've adjusted it to. It's also just good practice to clamp it with the handle on the same side of the two boards you're doweling together. I do take issue with the machining tolerances on the tool--the inner thread of the aluminum block that takes the handle/turnscrew isn't in great alignment with the two steel rods. Makes turning the handle stiff and uneven. But it works fine for my purposes. If I need to mass produce, I'd get a better piece of equipment.

I used this product to install floating shelves. The shelf brackets required a 1/2 hole to be drilled in multiple locations that needed to be centered in the 1.5 inch thick wood shelf. The jig allows multiple diameter holes to be drilled. The jig worked great. Make sure you have a vise that will hold the shelf still while you drill the holes. I used a spade bit because i needed to drill a 6" deep hole to accept the shelf bracket dowel and my 1/2 regular bit was not long enough. It required a bit more effort to clean the hole. The shelves look great.